速生材杨木P-RC APMP浆和桉木漂白化学浆间的协同效应

Synergistic Effects of Fast-growing Poplar P-RC APMP and Bleached Eucalyptus Kraft Pulp

关键词:  杨木P-RC APMP浆  桉木BKP浆  协同效应  混合

Key Words:poplar P-RC APMP  eucalyptus BKP  synergistic effect  blending

摘要:两种不同游离度（CSF）（480 mL和250 mL CSF）的速生材杨木P-RC APMP浆分别与桉木漂白硫酸盐浆(BKP)（CSF 425 mL）混合，通过研究混合浆在物理性能和光学性能方面的变化，探讨了杨木P-RC APMP浆和桉木BKP浆之间的协同效应。研究结果表明，低游离度的杨木P-RC APMP浆与桉木BKP浆混合后，能够在抗张强度、抗张能量吸收、湿抗张强度和撕裂度等方面产生协同效应；混合浆的松厚度和不透明度随杨木P-RC APMP浆配比量的增加而增加；但是混合浆的白度会受到较低白度的杨木P-RC APMP浆的影响。

Abstract:The fast-growing poplar P-RC APMP with two different freenesses were mixed respectively with a bleached eucalyptus kraft pulp (BKP). The synergistic effect between the poplar P-RC APMP and eucalyptus BKP was explored by investigating the changes of the physical and optical properties of the blended pulps. The results showed that after blending the low-strength poplar P-RC APMP and eucalyptus BKP, a synergistic effects of the tensile strength, tensile energy absorption (T.E.A), re-wet tensile strength, tear strength, and so on could be occurred. The bulk and opacity of the blended pulp increased as the blending ratio of the poplar P-RC APMP increased. About 14%~25% increase in tensile strength of the blended pulp could be obtained compared to the eucalyptus BKP alone. However, the brightness of the blended pulp was impacted by that of the poplar P-RC APMP.